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Current identification/main database link: Ciperoella Olsson and Hemleben, in Olsson et al. 2018
Type of wall: Normal perforate, spinose, Neogloboquadrina-type wall texture with underlying ruber/sacculifer or sacculifer wall with elongate parallel ridges. Pore concentrations range from around 25-60 pores/50 μm2 test surface area and pore diameters from around 0.9-2.5 μm Test morphology: Test low trochospiral, lobulate in outline, chambers globular to ovoid. In the final whorl, 4½-5 chambers; aperture umbilical bordered by a thin rim. DISTINGUISHING FEATURES.— Ciperoella n. gen. has an underlying ruber/sacculifer wall with elongate parallel ridges and short incomplete cross ridges, a wall texture like that in the nonspinose Neogloboquadrina. Porosity ranges from about 25-60 pores per 50 μm2 area. Several species are typically small in size (Globoturborotalita, to which a number of species discussed here have been previously assigned, by the distinctive reticulate nature of the wall and on average ½ to 1 more chamber in the final whorl. DISCUSSION.— Ciperoella is a common form in the Oligocene that has been regarded by workers as a species of Globigerina. However, it does not have the wall texture of Globigerina. Hence, the naming of a new genus. STRATIGRAPHIC RANGE.— Upper Eocene to lower Miocene.
Original Description
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Etymology:
Extra details from original publication
Editors' Notes
Bolli, H. M. (1954). Note on Globigerina concinna Reuss 1850. Contributions from the Cushman Foundation for Foraminiferal Research. 5(1): 1-3. gs V O Olsson, R. K., Hemleben, C., Coxall, H. K. & Wade, B. S. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene Ciperoella. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 7): 215-230. gs V OReferences:
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Ciperoella compiled by the pforams@mikrotax project team viewed: 6-2-2023
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